5 letter words:
hippo12,
4 letter words:
koph13,
holk11,
kohl11,
pork10,
holp9,
kilo8,
plop8,
prop8,
roil4,
3 letter words:
khi10,
kip9,
kop9,
hip8,
hop8,
phi8,
poh8,
ilk7,
irk7,
kir7,
koi7,
kor7,
pip7,
pop7,
rho6,
lip5,
lop5,
poi5,
pol5,
pro5,
rip5,
oil3,
2 letter words:
ki6,
hi5,
ho5,
oh5,
op4,
pi4,
li2,
lo2,
oi2,
or2,